The Environmental Protection Agency (EPA) Renovation, Repair and Painting (RRP) Final Rule 40 CFR 745....
...requires that renovations -- in pre-1978 homes or child occupied facilities -- which are conducted for compensation that involve the removal or modification of painted surfaces or that disturb more than 6 square feet (interior) & 20 square feet (exterior) of lead paint must be performed by Certified firms using Certified Renovators. This includes landlords and their employees. Fines for failure to comply can be up to $32,500.